Fundamentals of statistical signal processing: estimation theory
Fundamentals of statistical signal processing: estimation theory
IEEE Transactions on Communications
SNR estimation for nonconstant modulus constellations
IEEE Transactions on Signal Processing
Channel quality estimation and rate adaptation for cellular mobile radio
IEEE Journal on Selected Areas in Communications
Cramér-rao lower bounds for subcarrier SNR estimates over multicarrier channels
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
NDA SNR and CRLB Estimation Over MISO with STBC Channels
International Journal of Business Data Communications and Networking
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In this paper, we derive for the first time analytical expressions for the exact Cramér-Rao lower bounds on the variance of unbiased non-data-aided (NDA) signal-to-noise ratio (SNR) estimators of square QAM-modulated signals. The channel is assumed to be constant over the observation interval and the received signal is supposed to be corrupted by additive white Gaussian noise (AWGN). The derived expressions corroborate previous attempts to numerically compute the considered CRLBs. It will be shown that the NDA CRLBs differ widely from one modulation order to another especially at moderate SNR levels.